Excuse me, where is the ancient Surabaya?

The ancient Sishui River originated in the west of Pingdingshan in Xintai (elevation 8 14m).

It flows through Sishui, Qufu, Yanzhou, Zoucheng, Weishan and other counties and cities, and flows into Nanyang Lake in Xinzha Village, rencheng district, with a river length of 159km (domestic 146km) and a drainage area of 2,357 km2 (domestic 199 1 km2). There are 32 tributaries, including left bank 13 and right bank 19. There are 4 large and medium-sized reservoirs and 38 small reservoirs/kloc-0 in the basin.

Sihe River is a seasonal mountain torrent channel. During the flood season, flooding and serious sediment deposition caused the river bed to rise and the dangerous sections of the river increased. In addition, the original dikes were short and thin, and the rivers were curved and varied in width, which led to frequent flood disasters in history. The average gradient of the main stream of Sihe River decreased to 1.86‰, 3. 1.5‰ above Jihekou, 1.58‰ below Jihekou and 1.3‰ below Jinkouba.

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